/Engine/Source/Developer/TargetPlatform/Public/Common/TargetPlatformBase.h
template<typename TPlatformProperties> class TNonDesktopTargetPlatformBase : public [TTargetPlatformBase< TPlatformProperties >](API\Developer\TargetPlatform\Common\TTargetPlatformBase)
bool
bIsClientOnly
True if this target platform is client-only, ie strips out server stuff